/**
 * COOKIE存储
 * @param {string} key 键
 * @param {string} val 数据
 * @param {number} s   时间/s
 */
 function setcookie(key, val, s)
 {
     if (typeof val == 'object') val = JSON.stringify(val)
 
     const d = new Date 
     d.setTime(  d.getTime() - 1000*60*60*8 + 1000*s )
     document.cookie = `${key}=${val}; expires=${d}`
 }
 
 /**
  * COOKIE获取
  * @param {string} key 键
  * @returns 
  */
 function getcookie(key)
 {
     let arr = document.cookie.split('; ')
     for (let i=0; i<arr.length; i++)
     {
         let item = arr[i]
         let temp = item.split('=')
 
         if (temp[0] == key){
             return temp[1]
         }
     } 
 }
 
 /**
  * COOKIE删除
  * @param {string} key 键
  */
 function removecookie(key)
 {
     setcookie(key, null, -1)
 }